Double oven



FIG. 1 is a front perspective view of a double oven showing an embodiment of our new ornamental design;

FIG. 2 a front view thereof;

FIG. 3 is a top view thereof, with the bottom view thereof being a mirror image thereof; and,

FIG. 4 is a right side view thereof, with the left side view being a mirror image thereof.

The broken lines represent environment and form no part of the claimed design.

The sides of the double oven not shown forms no part of the claimed design. 

CLAIM The ornamental design for a double oven, as shown and described. 